Improved Construction of Nonlinear Resilient S-Boxes

  • Authors:
  • Kishan Chand Gupta;Palash Sarkar

  • Affiliations:
  • -;-

  • Venue:
  • ASIACRYPT '02 Proceedings of the 8th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
  • Year:
  • 2002

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Abstract

We provide two new construction methods for nonlinear resilient functions. The first method is a simple modification of an elegant construction due to Zhang and Zheng and constructs n-input, m-output resilient S-boxes with degree d m. We prove by an application of the Griesmer bound for linear error correcting codes that the modified Zhang-Zheng construction is superior to the previous method of Cheon in Crypto 2001. Our second construction uses a sharpened version of the Maiorana-McFarland technique to construct nonlinear resilient functions. The nonlinearity obtained by our second construction is better than previously known construction methods.